Brake-shoe.



J. S. THOMPSON.

BRAKE SHOE. 1 APIIIOATION FILED JAN. 2a, 1912.

Patented May 912.

2 SHEETS-BHE Atty J. s. THOMPSON;

BRAKE SHOE. APPLICATION rmm JAN. 25, 1912.

Patented May 7, 1912.

2 BHEETS-SHEET' 2.

UNITED STATES PATENT OFFICE.

JAMES s. THOMPSON, or CHICAGO, ILLINOIS, ASSIGNOR To EDWARD H. FALLOWS, on NEW YORK, M. Y.

BRAKE-SHOE.

Specification of Letters Patent.

Patented May 7, 1912.

To all whom it may concern:

Be it known that I, JAMES S. THOMPSON, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have made and invented certaln new and useful Improvements in Brake- Shoes, of which the following is a specification.

My invention relates to an improvement in brake shoes and more particularly to the lugs for securing them to the brake heads, the object thereof being to provide an 1mproved form of securing lug made from a blank cut out of a metal plate, and bent into proper form, the lug being designed to be embedded in the rear face of a cast metal brake shoe; and to provide such other improvements in, and relating to securing lugs for brake shoes as are hereinafter referred to and specifically set out in the claims.

In the accompanying drawings, Figure 1 is a perspective View showing the preferred form of my improved securing lug in con nection with a steel back; Fig. 2 is a view showing the blank from which my improved securing lug is formed; Fig. 8 1s a View showing a section upon a vertical central plane of the securing lug and back shown in Fig. 1 embedded in the rear face of a cast metal brake shoe; Fig. 4 is a view showing my improved securing lug formed integral with a metal back; Fig. 5 is a view showing the blank from which the lug and back shown in Fig. 4 are formed; and, Fig. 6 is a view taken upon a vertical central plane showing the lug and back shown in Fig. 4 embedded in the rear face of a cast metal brake shoe.

Referring to Fig. 2 of the drawings, wherein the blank from which my improved securing lug is formed is shown, the reference numeral 7 designates two base portions which together provide a two-part base for the finished lug, and 8 designates two portions which, when the blank is properly bent, provide end portions of the lug. The reference character 9 designates a top portion which provides a top for the lug when the blank is properly bent, and 10 designates top supporting portions of the blank which in the finished lug are bent so as to lie beneath the top portion and support the same and thus prevent the lug from being distorted or crushed in use or transportation. The base portions 7, end portions 8,

and top portion 9 are inline with one another in the blank, and the top supportin sections project from the sides of the end portions 8, preferably at an angle as shown in Fig. 2. A portion 11 of each of the ends 8 of the blank is slitted and bent downward in the finished lug to thereby provide for more firmly securing the lug to the cast metal brake shoe with which it is used. The blank is also commonly rovided with holes 12 through which the mo ten metal may flow as the shoe is cast, in order to assist in anciloring the lug in the body portion of the s oe.

Referring to Figs. 1 and 3, the reference character 13 designates the two parts of the two-part base of my improved lug; l4: designates the end portions thereof, and 15 the top portion of the lug; said top portion connecting the upper ends of the end portions 14 as shown. The reference character 16 designates two top supporting sections,these sections being formed by bending the side sections 10 of the blank so as to bring their upper ends beneath the top portion 15 of the finished lug, whereby they support and strengthen the lug and prevent it from being crushed or forced downward toward the rear face of the shoe in handling, during transportation or when the shoe is in use. I preferably provide four top supporting sections as shown, although it will be obvious that a lesser number may be used, in which case, the blank from which the lug is formed would be provided with a lesser number of projecting portions 10 than is shown in Fig. 2. The reference character 17 shows the portion 11 of the blank out free from theend portions 8 as hereinbefore explained, and bent down so as to extend below the plane of the two-part base, thereby providing holes or openings to receive akey which extends longitudinally of the shoe and by means of which it is secured to a brake head or other form or type of support.

Fig. 1 shows my improved lug as used in connection with a steel back 18, the latter being provided with a central opening through which the lug may extend, the two-part base 13 lying beneath the back. This back 18, with the lug in place as shown in Fig. 1, is placed in a suitable mold during the casting of the shoe, and fluid metal poured about the same, whereupon the base 13 of the lug, the downwardly inclined portions 17, and

the steel back 18 become embedded in the rear portion of the shoe as shown in Fig. 8, wherein 19 designates the cast metal body portion of the shoe. The top supporting sections 16 are obviously bent about the side edges of the end portions 1 1 as axes, and the downwardly inclined lugs 17 bent about axes coinciding approximately with the tion 23 extending between the upper ends of 20 the end portions 22 corresponding to the top portion 15. This lug is formed with top supporting sections 24 similar in form and function to the sections 16 hereinbefore referred to, and a downwardly inclined lug 25 25 similar to the lug 17.

In the finished shoe shown in Fig. 6 the base portions 20, and lugs 25, are embedded in the rear face of the cast metal body 26 of the shoe, the same as hereinbefore explained in describing the form of my invention shown in Figs. 1 and 3.

Fig. 5 shows a blank from which the combined lug and back shown in Fig. A is formed. In this form of my invention the blank employed corresponds approximately with the blank shown in Fig. 2, the portions thereof from which the two-part base is formed being simply prolonged, and detail description of the blank itself will, it is believed, be unnecessary. The central portion of the blank 26 is left intact in order to provide for the top 23 of the finished lug, the opposite ends thereof being slitted as indi cated at 27 in order that the metal between the slits may be turned downwardly to form the inclined leaves or lugs of the finished device, and whereby to assist in anchoring the same in position in the cast metal of the body of the shoe. The blank is provided with the openings 28 which correspond to the openings 21 and provide for the cast metal of the body flowing through the same to assist in anchoring the back of the shoe. The blank is also provided with the inclined flanges or leaves29 coresponding to the inwardly extending'supports 2 1.

From the foregoing it will be understood that the lug or combined lug and back are preferably formed from a single piece of metal, rendering it cheap to manufacture and capable of being quickly and readily bent to proper shape. Furthermore, it will be understood that by reason of the inwardly extending supports being formed integral 65 with the lug and extending the full height thereof and below the top 23, the necessity for reinforcing the lug with the cast metal body of the shoe, as is now commonly done, is avoided, these supports being sufiicient to prevent any distortion of the lug either during the handling or transportation of the same, or while the shoe is in service.

Having thus described my invention, I claim and desire to secure by Letters Patent:

1. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said end portions, and two top supporting sections extending from said end portions toward one another, the upper ends of which lie beneath and serve to support said top portion.

2. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said end portions, and two top supporting sections extending from said end portions toward one another, the upper ends of which lie beneath and serve to support said top portion, a portion of each of said end portions being out free from the rest and bent downward about the adjacent ends of the parts of said base as an axis.

3. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said portions, and two top supporting sections extending from said end portions toward one another, the upper ends of which lie beneath and serve to support said top portion; in combination with a cast metal brake shoe in the rear face of which said two-part base and the lower ends of said top supporting sections are embedded.

4:. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending be tween the upper ends of said end portions, and two top supporting sections extending from side edges of said end portions across the space beneath said top the upper ends of which not eath and serve to supportsaid top portion.

5. A lug for securingmggtkle shoe to a suitable support, the same formed from a sheet metal blank bent to pro ide a two-part base, two end p0rt1ons exteneino;

upward from adjacent ends of the two parts 01 said base, a top portion extending between the upper ends of said end portions, and two top supporting sections extending from side edges of said end portions toward one another and across the space beneath said top the upper ends of which lie beneath and serve to support said top portion.

6. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts oi? said base, a top portion extending between the upper ends of said end portions,

and a top supporting section extending from a side edge of one of said end portions beneath said top the upper end of which lies beneath and serves to support said top portion.

7. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said end portions, and a top supporting section extending from a side edge of one of said end portions beneath said top, the upper end of which lies beneath and serves to support said top portion; a portion of one of said end portions being out free from the rest and bent downward so as to extend below the plane of said two-part base.

8. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said end portions, and two top supporting sections extending from side edges of said end portions across the space beneath said top, the upper ends of: which lie beneath and serve to support said top portion, a portion of each of said end portions being out free from the rest and bent downward about the adjacent ends of the parts of said base as an axis.

9. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a two-part base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said end portions, and a top supporting section extending from a side edge of one of said end portions beneath said top, the upper end of which lies beneath and serves to support said top portion; in combination with a cast metal brake shoe in the rear faceof which said two-part base and the lower end of said top supporting section are embedded.

10. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a twopart base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said end portions, and two top supporting sections extending from said end portions toward one another, the upper ends of which lie beneath and serve to support said top portion, a portion of each of said end portions being out free from the rest and bent downward about the adjacent ends of the parts of said base as an axis; in combination with a cast metal brake shoe in the rear face of which said two-part base, said downwardly bent portions, and the lower ends of said top supporting sections are embedded. V

11. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a twopart base, two end portions extending upward from adjacent ends of the two parts 01": said base, a top portion extending between the upper ends of said end portions, and a top supporting section extending from a side edge of one of said end portions beneath said top, the upper end of which lies beneath and serves to support said top por tion, a portion of one of said end portions being out free from the rest and bent downward so as to extend below the plane of said two-part base; in combination with a cast metal brake shoe in the rear face of which said two-part base, said downwardly bent portion, and the lower end of said top supporting section are embedded.

12. A lug for securing a brake shoe to a suitable support, the same being formed from a sheet metal blank bent to provide a twopart base, two end portions extending upward from adjacent ends of the two parts of said base, a top portion extending between the upper ends of said end portions, and two top supporting sections extending from side edges of said end port-ions across the space beneath said top, the upper ends of which lie beneath and serve to support said top portion, a portion of each of said end portions being out free from the rest and bent downward about the adjacent ends of the parts of said base as an axis; in combination with a cast metal brake shoe in the rear face of which said two-part base said downwardly bent portions, and the lower end of said top supporting sections are embedded.

18. An integral blank for a securing lug for brake shoes comprising two base portions, two end portions, and a top portion, arranged in line with one another, together with projecting top supporting portions extending from the sides of said end portions.

14:. A lug for use in securing a brake shoe to a brake head, comprising an integral top,

& 1,025,219

sides formed With openings therein for the reception of a key, and ends, each of which is formed of tWo plates meeting at their Vertical edges, the upper edges of the same lying below and supporting said top.

at their vertical edges, the upper edges of said plates lying below and supporting the ends of said top.

Signed at Chicago, in the county of Cook 15 and State of Illinois this 22nd day of J any 15. A lug for securing a brake shoe to a A. D. 1912. brake head and comprising an inte ral top sides formed With an opening for tile recep JAMES THOMPSON tion of a key, and ends, each of said ends lVitnesses:

being formed of two plates folded inwardly from the said sides to approximately meet GEORGE C. HUNT, LOUIS W. FISCHER.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. C." 

